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Keyword
cognition
2
Chimpanzee
1
Chimpanzees
1
Competition
1
Cooperation
1
Group Formation
1
Pan troglodytes
1
Social Behavior
1
Trust Game
1
animal behavior
1
competition aversion
1
consolation
1
cooperation
1
costly punishment
1
costly sacrifice
1
developmental psychology
1
distributive justice
1
egalitarianism
1
elephant
1
face recognition
1